SOF Connect AD is certified according to the requirements of the International Organization for Standardization (ISO) receiving certificates for two standards: ISO 9001:2015 (Quality Management) and ISO 14001:2015 (Environmental Management).

ISO 9001:2015 and ISO 14001:2015 certificates guarantee that all activities performed by SOF Connect AD are directed towards effective resource management and constant improvement of service quality focused on satisfying customer needs.

SOF Connect AD is certified under the ACI EUROPE Airport Carbon Accreditation Programme at Level 2 Reduction. Sofia Airport is the first Bulgarian airport to be accredited by ACI EUROPE and granted a Certificate of Accreditation.

The standards applied according to ISO encompass all activities performed by Sofia Airport
in its capacity as airport operator in compliance with Civil Aviation Act, including other activities carried out by
the airport company such as ground handling, commercial activities, rental of terrains,
premises, facilities and other capital assets.